'use strict'

class content {

  constructor () {
    //param默认就是/:id，若要改变路由，则可以设置此属性，比如设置为/:name
    //this.param = '/:id'
  }
  __mid(){
    return[
      {
        name: 'token-verify',
        path: ['post','delete']
      }
    ]
  }

  //以下方法，若不需要，要去掉，避免无意义的路由。

  //获取资源具体内容
  //对应路由 GET content/:id
  async get (c) {
    let id = c.param.id
    let sqltext = 'SELECT id,detail,title,updata_time'+' FROM content WHERE id=$1';
    let r = await c.service.psql.query(sqltext, [ id ])
    if(r.rowCount===0) return c.status(404).send('not found');
    c.send(r.rows[0])
  }

  //创建资源
  //对应路由 POST content
  async post (c) {
    try{
      //c.body是提交的请求体数据
      let data = JSON.parse(c.body)
      let sqltext = 'INSERT INTO content'
              +'(id,detail,title,add_time,update_time) '
              +'VALUES($1,$2,$3,$4,$5)'

      //随机数字转成16进制并去掉前两位，字符串作为ID
      let id = Math.random().toString(16).substring(2)
      let tm = Data.now()

      let r = await c.service.psql.query(sqltext,[
          id,data.detail,data.title,tm,tm
      ])

      if(r.rowCount===0){
          return c.status(500).send('failed')
      }
      c.send(id)
  }catch(err){
      console.error(err)
      c.status(400).send('bad data')
  }
  }

  //更新资源
  //对应路由 PUT content/:id
  async put (c) {

  }

  //获取列表
   //对应路由 GET content
  async list (c) {
    let sqltext = 'SELECT id,title,update_time FROM content'
    let r = await c.service.psql.query(sqltext)
    c.send(r.rows)
  }

  //删除资源
   //对应路由 DELETE content/:id
  async delete (c) {
    let r = await c.service.psql.query(`DELETE FROM content WHERE id=$1`,[c.service.psql.param.id])
    c.send({
        count:r.rowCount
    })
  }

}

module.exports = content
